Oligomerization process
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United States of America Patent
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Dec 5, 2006
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N/A
app pub date -
Jul 23, 2004
filing date -
Jul 25, 2003
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Abstract
Alkenes, such as normal butenes in a mixed C.sub.4 stream are oligomerized, preferably to dimers, which are dimerized in a distillation column reactor over ZSM-57 zeolite catalyst at high conversions and high selectivity to octenes. Prior to oligomerization the mixed C.sub.4 stream is pretreated to remove dimethyl ether, butadienes and sulfur compounds.
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